But the company also talked a little bit more about Windows On ARM. This operating system looks a lot like Windows 8, but will run only on devices with ARM-type processors -- like the iPad and nearly all other tablets have.

Those tools are important -- they help companies deploy applications to lots of PCs quickly, control which apps and features users can access, and so on.

ARM-based tablets running Windows 8 are ideal for workers who are constantly on the go and need a long-lasting battery. ARM-based tablets use less power than 32-bit and 64-bit devices and workers can rely on the extended uptime of these devices. Although the ARM- based version of Windows does not include the same manageability features that are in 32-bit and 64-bit versions, businesses can use these power-saving devices in unmanaged environments.

Companies will still be able to manage tablets based on the x86 and 64-bit (Intel-type) processors that are used in most PCs today. But those tablets probably won't get the same battery life as an ARM-based tablet, so won't be as good for workers who spend a lot of time on the road.